Electric Laboratory

Permitted types of tests and measurements of the electrical laboratory:

• Checking the condition of the elements of the grounding devices of electrical installations;

• Checking the presence of a circuit and measuring the transition resistance between grounding conductors and grounding conductors, grounded equipment (elements) and grounding conductors;

• Earth resistivity measurement;

• Resistance measurement of grounding devices of all types;

• Measurement of insulation resistance, windings of electric motors, devices, secondary circuits and electrical wiring, electrical equipment;

• Measurement of the impedance of the phase-zero loop;

• Checking the operation of protection with a power supply system with grounded and isolated neutral;

• Checking and testing of installation circuit breakers of supply lines;

• Checking the operation of the protection made by fuse-links in electrical installations with voltage up to 1000 V, calibration of fuse-links;

• Checking circuit breakers in electric networks with voltage up to 1000 V for current operation;

• Checking the performance and parameters of the DNA;

• Checking the lightning protection system;

• Measurement of transition resistance of contacts and resistance of windings of electrical machines and transformers;

• Testing cable lines and electrical equipment up to 1000 V with high voltage;

• Testing and measuring the characteristics of voltage transformers and current transformers;

• Verification of relay protection devices, automation and telemechanics;

• Check emergency lighting schemes;

• Light measurement;

• Measurement of the quality of electrical energy.